RESET: ECU,ACCELERATOR,THROTTLE, IDLE

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
Larz
Moderator
Posts: 2933
Joined: Thu Feb 21, 2013 8:55 pm
Car: 2009 M35 RWD
Location: Ft Lauderdale, Florida
Contact:

RESET: ECU,ACCELERATOR,THROTTLE, IDLE

Postby Larz » Thu Dec 18, 2014 11:26 am

I recently had to do a reset due to an error I caused. I knew what to fix, so I knew the trouble was repaired, but my CEL would not go out and my idle and acceleration was all messed up. Thankfully, Svard had the following information and it saved me a trip to the dealer. I will add this post to the FAQs.

Thanks Svard!

*** This will not guarantee a fix for your issue rather something you can try which won't harm your car. I would still recommend taking it to a dealer if this doesn't work.

ECU Accelerator Pedal Reset Procedure
Note: Timing is critical for this to work!
1. Turn the ignition switch to on. Dash gauges lit. Don’t start the engine!
2. Wait 3 seconds.
3. Fully depress and release the accelerator pedal 5 times within 5 seconds.
4. Wait 7 to 10 seconds.
5. Fully depress the accelerator pedal for approximately 10 seconds. At this point the check engine light starts to blink quickly indicating Diagnostic Test Mode II (Self-diagnostic results) has started.
6. Release accelerator pedal and wait 5 to 10 seconds.
7. Fully depress the accelerator pedal for 10 seconds. At this point the check engine light should change to blinking slowly indicating “Erasing ECU Memory”.
8. Release the accelerator pedal and turn the ignition switch to off.
9. Restart the engine. The check engine light should be out.

Accelerator Pedal Release Position Learning Procedure
1. Make sure that the accelerator pedal is fully released.
2. Turn ignition switch “ON” and wait at least 2 seconds.
3. Turn ignition switch “OFF” wait at least 10 seconds.
4. Turn ignition switch “ON” and wait at least 2 seconds.
5. Turn the ignition switch "OFF" and wait at least 10 seconds.

Throttle Valve Closed Position Learning
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch is “ON”.
3. Turn ignition switch is “OFF” wait at least 10 seconds.
Make sure that the throttle valve moves during above 10 seconds by confirming the operating sound

Idle Air Volume Learning (Throttle Position Learning)
It's best to time with a watch/clock.
1. Perform “Accelerator Pedal Released Position Learning”.
2. Perform “Throttle Valve Closed Position Learning”.
3. Start engine and warm it up to normal operating temperature.
4. Turn ignition switch “OFF” and wait at least 10 seconds.
5. Conform that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
6. Repeat the following (steps 7a, 7b) procedures quickly five times within 5 seconds.
7a. Fully depress the accelerator pedal (HARD)
7b. Fully release the accelerator pedal.
8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the Check Engine Light (CEL) stops
blinking and turned ON.
9. Fully release the accelerator pedal within 3 seconds after the CEL is ON.
10. Start engine and let it idle for 20 seconds.
11. Rev up the engine 2-3 times to ensure the idle speed and ignition timing are within spec.


User avatar
svard75
Posts: 1564
Joined: Mon May 11, 2009 3:26 am
Car: 06 M35x
Location: Toronto, Ontario, Canada

Re: RESET: ECU,ACCELERATOR,THROTTLE, IDLE

Postby svard75 » Thu Dec 18, 2014 11:31 am

You can find this and many more procedures in the EC document within the FSM's.

Larz
Moderator
Posts: 2933
Joined: Thu Feb 21, 2013 8:55 pm
Car: 2009 M35 RWD
Location: Ft Lauderdale, Florida
Contact:

Re: RESET: ECU,ACCELERATOR,THROTTLE, IDLE

Postby Larz » Thu Dec 18, 2014 11:39 am

Thank you for being an active member who helps us all. Your reset instructions and your post above with the FSM link is now in the FAQ section where it will no doubt be a great help to the NICO community.

User avatar
svard75
Posts: 1564
Joined: Mon May 11, 2009 3:26 am
Car: 06 M35x
Location: Toronto, Ontario, Canada

Re: RESET: ECU,ACCELERATOR,THROTTLE, IDLE

Postby svard75 » Thu Dec 18, 2014 11:45 am

Larz wrote:Thank you for being an active member who helps us all. Your reset instructions and your post above with the FSM link is now in the FAQ section where it will no doubt be a great help to the NICO community.
Thank you sir. I really enjoy doing this while I have time between my Status Reports, Project Hours Reports, Report Writing, and Meetings. Got a kid on the way so this may change :D

Happy Holidays Y'ALL!


Return to “Infiniti M35 and M45 Forum”